Electrochemical Determination of Titratable Acidity for the Discrimination of Schisandrae Chinensis Fructus and Schisandrae Sphenantherae Fructus

• KOTANI Akira

  Department of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences

• KANEKO Maki

  Department of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences

• MACHIDA Koichi

  Department of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences

• YAMAMOTO Kazuhiro

  Department of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences

• HAKAMATA Hideki

  Department of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences

抄録

A simple electrochemical procedure has been developed for determining the titratable acidity in Schisandrae Chinensis Fructus (SCF) and Schisandrae Sphenantherae Fructus (SSF) by means of reduction of quinone in the presence of acid compounds. To measure a voltammogram, a test solution was prepared by mixing a water extract from SCF or SSF and an electrolyte cocktail containing 3,5-di-tert-butyl-1,2-benzoquinone and NaCl. The quantitative results of titratable acidity in the SCF and SSF samples by the present voltammetry were in good agreement with those by neutralization titration using 0.1 M NaOH (r² = 0.980): y = 1.003x + 0.010, where the y- and x-axes were the titratable acidity obtained by the present voltammetry and the neutralization titration, respectively. Further, the titratable acidities in the SSF samples were significantly lower than those in the SCF samples (p < 0.01). From these findings, we show that the titratable acidity is useful as an indicator to discriminate between SCF and SSF. Moreover, a prototype of electrochemical portable sensor for on-site analysis has been provided to perform this procedure.

収録刊行物

• Analytical Sciences

  Analytical Sciences 36 (8), 1003-1008, 2020-08-10

  社団法人 日本分析化学会

キーワード

• Titratable acidity
• Schisandrae Chinensis Fructus
• Schisandrae Sphenantherae Fructus
• discrimination
• voltammetry
• sensor

詳細情報

• CRID: 1390285300181814784
• NII論文ID: 130007886477
• NII書誌ID: AA10500785
• DOI: 10.2116/analsci.20p049
• ISSN: 13482246
• ISSN: 09106340
• NDL書誌ID: 030563837
• PubMed: 32173677
• Web Site: http://id.ndl.go.jp/bib/030563837
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030563837
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.20P049.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.20P049/fulltext.html
• Web Site: https://www.jstage.jst.go.jp/article/analsci/36/8/36_20P049/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2021209239
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
  • KAKEN
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